Your views are interesting. I guess I'm just an extremist when it comes down to language. I agree he managed to optimize his 'effective power' if you count it in # of blocks mined, and he earns STEEM by mining blocks.
But, it's important to remember that we have no way to verify identity on a decentralized network. It's all based on human judgement. Justin did 20 very obvious puppet accounts, using chinese numerology, because he isn't too bright. He could have used his employees names / pictures to open semi-legit nodes that he still would have controlled (like he does on TRON). Who is to say that there is/was always really 20 real node owners in the steem top 20? Maybe WitnessX is secretly controlled by WitnessY, it's impossible to prove currently because of the inavailability of a working decentralized identity tech.
That's why I won't change my definition of sybil-attack, otherwise all current systems are not sybil-resistant and the term becomes useless.
RE: Fact: Steemit Sybil Attacked the Steem Blockchain